The GS-911, according to Hexcode, stores a list of the VIN's of the bikes you use it on for certain functions. This is used basically for the novice version, since you are limited to 10 bikes for these functions. I have upgraded to the pro version, but I wanted to find out the vin's of the bikes I've serviced to check them against the list of models on the latest Recall (ie. fuel leaks)
Roy